code: def comparator(self, field_1: Any, field_2: Any) -> list[int]:
      if field_1 and field_2:
          return self.cat_comparator(1, 1)
      elif field_1 or field_2:
          return self.cat_comparator(0, 1)
      else:
          return self.cat_comparator(0, 0)
  
file_path: dedupe/dedupe/variables/exists.py
imports: from __future__ import annotations
  from typing import Any
  from categorical import CategoricalComparator
  from dedupe._typing import PredicateFunction, VariableDefinition
  from dedupe.variables.base import DerivedType
  from dedupe.variables.categorical_type import CategoricalType
label_desc: Use image node_id 2 for calling the ExistsType obj's underlying member method code with example usage: obj.comparator(field_1, field_2) and returns: self, self, self